Commissioning and cryogenic performance of the UKRI STFC Daresbury Vertical Test Facility for jacketed SRF cavities. Issue 1 (1st May 2022)

• Record Type: Journal Article
• Authors: May, A J; Pattalwar, S; Mason, D; Middleman, K; Pendleton, M D; Smith, P A; Wilde, S; Akintola, A; Bainbridge, A; Buckley, R; Collier, G; Corlett, P; Dumbell, K; Ellis, M; Hancock, M; Hathaway, J; Hitchen, S; Hodgkinson, C; Hornickel, P; Hughes, G; Jenkins, C; Jones, G; Lowe, M; McIntosh, P; Miller, G; Mutch, J; Moss, A; Oates, A; Pattalwar, N; Sollars, P; Wheelhouse, A E; White, A A J; Wilson, J;
• Is Part Of: IOP conference series. Volume 1240:Issue 1(2022)
• Publication Date: 2022-05-01
• Subjects: Materials science -- Periodicals; 620.1105
• DOI: 10.1088/1757-899X/1240/1/012079
• Languages: English
• ISSNs: 1757-8981

Abstract

Abstract: A novel vertical test facility has been developed at the STFC Daresbury Laboratory. The cryostat is designed to test 3 jacketed superconducting RF cavities in a horizontal configuration in a single cool-down run at 2 K. The cavities are cooled with superfluid helium filled into their individual helium jackets. This reduces the liquid helium consumption by more than 70% in comparison with the conventional facilities operational elsewhere. The facility has now completed commissioning successfully and moved into a 2-year program to qualify 84 high-beta SRF cavities for the ESS (European Spallation Source) as part of the UK's in-kind contribution. This paper reports on the commissioning program, along with a detailed discussion of the cryogenic operations and performance of the facility, including that of the cryoplant.